Threats of the Galaxy, page 127.
You know how to put the full weight of your momentum into attacks while riding a mount or a speeder bike.
Prerequisites: Trained in the Pilot or Ride skill.
Benefit: When rid ing a beast as a mount or on a speeder bike (as a passenger or a pilot), you add +1 die of damage to any melee attacks if your mount or vehicle has already moved at least its speed th is turn.